Manufacture of glassware



No. 224,555. Patented Fem-11, 1880.

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' jection to this way of making the article is that loss. 35

gheny and State of Pennsylvania, have invented a new and usefulImprovement in the apparatus.

UNITED STATES.

PATENT Grinch;

THOMAS crimes, or PITTSBURG, PENNSYLVANIA.

MANUFACTURE OF GLASSWAREH SPECIFICATION forming part of Letters PatentNo. 224,555, dated February 1 7 1880i,

Application filedDecember 15.1879.

To all whom it may concern V Be it known that I, THOMAS C. PEARs, of thecity of Pittsburg, in the county of Alle- Manufacture of Glassware; andI do hereby declare the following to be a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,forming part of this specification, in whichi Figure l is a verticalsection of my improve Fig. 2 is a like view of the footmold, and Fig. 3is a plan view of the bowlmold.

Like letters of reference indicate like parts in each.

My invention relates to the manufacture of articles of glassware havinga solid or pressed foot, or foot and stem, and a seamless blown bowl.

Heretofore such articles have been made by pressing the foot orfoot andstem, and then removing it from the mold, placing it under the bowl-moldwith the peg projecting into such mold, blowing the bowl onto the peg,and rotating the bowl, and with it the foot and stem, at the time ofblowing the same. An obthe removal of the pressed foot or foot and stemfrom its mold, and its exposure to the air, chills it more or less, andprevents the formation of a perfect joint in some cases between the bowland foot, and causes breakage and My invention is designed to remedythis; and it consists in blowing the bowl onto the steiril or footbefore the foot is removed from its mo To enable others skilled in thearts to make and use my invention, I will proceed to describe itsconstruction.

In thedrawin gs, a indicates a sectional blowmold for forming the bowlof the article, such mold being of any suitable interior configurationwhich will not interfere with the rotation of the article therein. Thismold is provided with a hinge, b, handles a, and perforated lugs d,having a pin, 0, to secure the parts together in a closed position. Itis also provided with a beveled recess, f, in which fits a counterpartplate or projection, g, on the bed-plate h, wherea projection, j,similar to the projection g, for

securing the mold thereon.

The foot and stem 1 mare pressed by the plunger 11? in a partible orother mold, n, and

When pressed the ring a and plate n are removed and the mold placed andsecured firmly on the disk j. The mold a has handles 0, a

hinge, p, and perforated lugs g, by which the parts are fastenedtogether.

V The operation is as follows: The foot or foot and stem is firstpressed, the ring a and plate n removed, and the mold, with itscontained foot or foot and stem, is placed on the disk j, the end of thestem 1 projecting slightly into the bowl-mold a. The blower then insertsthe punty, with a gathering thereon, within the mold a, and proceeds toblow the bowl, rotating the glass back and forth within the mold, thuspreventing the formation of mold marks or seams. As soon as the glass onthe punty comes in contact with the end of the pressed foot, previouslyset in the mold, as before specified, union of the two will take place,and the foot, with its mold, being centered with the bowl-mold and freeto rotate, the bowl may be finished withoutrmold marks or scams ordistortion in any manner.

The foot being pressed separately, any desired shape can be given to it,and if the desired shape is'consistent therewith, it may be formed in asingle mold, thus avoiding moldmarks on both foot and bowl.

Thus it will be seen that the foot or foot and stem, not being removedfrom the mold, will not be exposed to the cold air until the union withthe bowl is effected; hence the loss arising from such exposure and fromcontact with the colder centering devices is overcome, and

thereby a saving effected. 1 am also enabled to produceclearer andhandsomer articles the. by the other plan mentioned.

It is very evident that, instead of rotating the article and thefoot-mold to produce a seamless bowl, the bowl-mold itself may berotated and the article and foot-mold be still. In that case therotating disk j may be dispensed with.

This invention is an improvement on and differs from the inventiondescribed in my Patent No. 179,951, of July 18, 1876, in thatin the saidpatent the foot or stem is removed from its mold before the bowl isblown upon it,whi1e in this case the bowl is blown on the foot or stemwhile the latter is still in its mold.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. As an improvement in the manufacture of footed or footed and stemmedglassware wherein a pressed foot is united to a blown bowl, blowing thebowl upon the foot peg or stem while the foot is still contained withinits mold, and causing the rotation of the foot and bowl relatively tothe bowl-mold, or vice versa, while the bowl is being blown,substantially as and for the purposes described.

THOMAS o. FEARS.

Witnesses:

J AMEs H. PoRTE, J. K. SMITH.

